full transcript

From the Ted Talk by Luis von Ahn: Massive-scale online collaboration

Unscramble the Blue Letters

So this is how the sesytm works. And since we released it about three or four years ago, a lot of websites have started switching from the old CAPTCHA, where ppeloe wasted their time, to the new CAPTCHA where people are helping to digitize books. So every time you buy tickets on Ticketmaster, you help to dtiiigze a book. Facebook: Every time you add a finred or poke somebody, you help to digitize a book. Twitter and about 350,000 other sites are all using reCAPTCHA. And the number of sties that are using reCAPTCHA is so high that the number of words we're digitizing per day is really large. It's about 100 million a day, which is the eulenvaiqt of about two and a half million books a year. And this is all being done one word at a time by just people tiypng CAPTCHAs on the Internet.

Open Cloze

So this is how the ______ works. And since we released it about three or four years ago, a lot of websites have started switching from the old CAPTCHA, where ______ wasted their time, to the new CAPTCHA where people are helping to digitize books. So every time you buy tickets on Ticketmaster, you help to ________ a book. Facebook: Every time you add a ______ or poke somebody, you help to digitize a book. Twitter and about 350,000 other sites are all using reCAPTCHA. And the number of _____ that are using reCAPTCHA is so high that the number of words we're digitizing per day is really large. It's about 100 million a day, which is the __________ of about two and a half million books a year. And this is all being done one word at a time by just people ______ CAPTCHAs on the Internet.

Solution

  1. friend
  2. digitize
  3. system
  4. people
  5. sites
  6. equivalent
  7. typing

Original Text

So this is how the system works. And since we released it about three or four years ago, a lot of websites have started switching from the old CAPTCHA, where people wasted their time, to the new CAPTCHA where people are helping to digitize books. So every time you buy tickets on Ticketmaster, you help to digitize a book. Facebook: Every time you add a friend or poke somebody, you help to digitize a book. Twitter and about 350,000 other sites are all using reCAPTCHA. And the number of sites that are using reCAPTCHA is so high that the number of words we're digitizing per day is really large. It's about 100 million a day, which is the equivalent of about two and a half million books a year. And this is all being done one word at a time by just people typing CAPTCHAs on the Internet.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
million people 5
business model 5
digitize books 4
randomly chosen 3
major language 3
language education 3
simple sentences 3
random characters 2
project started 2
started feeling 2
feeling bad 2
insulting people 2
digitize human 2
human knowledge 2
called duolingo 2
severin hacker 2
people translating 2
favorite part 2
pay people 2
foreign language 2
professional language 2
professional translator 2
translate wikipedia 2
active users 2
fair business 2
current business 2

ngrams of length 3

collocation frequency
started feeling bad 2
digitize human knowledge 2
million people translating 2
fair business model 2
current business model 2

Important Words

  1. add
  2. book
  3. books
  4. buy
  5. captcha
  6. captchas
  7. day
  8. digitize
  9. digitizing
  10. equivalent
  11. friend
  12. helping
  13. high
  14. internet
  15. large
  16. lot
  17. million
  18. number
  19. people
  20. poke
  21. recaptcha
  22. released
  23. sites
  24. started
  25. switching
  26. system
  27. ticketmaster
  28. tickets
  29. time
  30. twitter
  31. typing
  32. wasted
  33. websites
  34. word
  35. words
  36. works
  37. year
  38. years